Much like other trailer versions of songs, I'm sure this one will be tweaked a bit before it is released. However, this just opens up to some good old comparing and contrasting between versions. Kinda like how many people did that with My Only Shining Star (Beta is better) and A Brighter Day. Either way, I want people to hurry up and show some support so we can get it translated to other places. I wanna try this (and DanceMasters) so badly!

Do you have any idea who the vocalist might be? DDR II is bringing a few new ones so maybe it's one of them or an older vocalist. I wouldn't be surprised if this was a song by someone other than NAOKI since he's been getting input from other groups as of late.
Calling it now: BOOM BOOM STAR ~関西 Energy Style~ in IIDX Lincle

I'd call it more of a "spiritual successor" than a sequel. There's not really any set choreography, it looks like it just gives you basic template for the dances and encourages players to be creative and make their own choreography based on that.